Android添加图片到ListView或者 RecyclerView显示

<?xml version="1.0" encoding="utf-8"?>
<liu.myrecyleviewchoosephoto.view.SquareRelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">


    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="7dp"
        android:layout_marginRight="7dp"
        android:layout_marginTop="14dp"
        android:background="@drawable/shape_white_bg_corner"
        >

        <ImageView
            android:id="@+id/ivDisPlayItemPhoto"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:contentDescription="@null"
            android:scaleType="centerCrop"
            android:layout_centerInParent="true"
            android:layout_marginRight="8dp"
            android:layout_marginLeft="8dp"
            android:layout_marginTop="5dp"
            android:layout_marginBottom="5dp"
            />

        <ImageView
            android:id="@+id/ivAddPhoto"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_centerInParent="true"
            android:background="@color/white"
            android:scaleType="centerCrop"
            android:src="@mipmap/add_photo_refund"
            android:visibility="visible"/>

        <ImageView
            android:id="@+id/ivUploadingBg"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/shape_grey_bg_corner"
            android:visibility="gone"/>

        <ImageView
            android:id="@+id/ivError"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:src="@mipmap/icon_prompt"
            android:visibility="gone"/>

        <TextView
            android:id="@+id/tvProgress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="0%"
            android:textColor="@color/white"
            android:textSize="16sp"
            android:visibility="gone"/>

    </RelativeLayout>

    <ImageView
        android:id="@+id/ivDelete"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:src="@mipmap/delete_photo"
        android:visibility="gone"/>


</liu.myrecyleviewchoosephoto.view.SquareRelativeLayout>

 @Override
    public int getItemCount() {
        if (mDatas == null || mDatas.size() == 0) {
            return 1;
        } else if (mDatas.size() < mMaxNum) {
            return mDatas.size() + 1;
        } else {
            return mDatas.size();
        }
    }

package liu.myrecyleviewchoosephoto.view;


import android.content.Context;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

/**
 * 正方形的RelativeLayout
 * Created by 刘楠 on 2016/8/13 0013.16:07
 */
public class SquareRelativeLayout extends RelativeLayout {
    public SquareRelativeLayout(Context context) {
        super(context);
    }

    public SquareRelativeLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public SquareRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {


        //设置自己测量结果
        setMeasuredDimension(getDefaultSize(0,widthMeasureSpec),getDefaultSize(0,heightMeasureSpec));


        /**
         * 测量子View的
         */
        int childWidthSize=getMeasuredWidth();
        //高度与宽度一样
        widthMeasureSpec =MeasureSpec.makeMeasureSpec(childWidthSize,MeasureSpec.EXACTLY);
        heightMeasureSpec =widthMeasureSpec;

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}